Effect of Acid Treatment on the Recovery of Valuable Metals from Steel Plant Exhaust Pages 323-328

Effect of Acid Treatment on the Recovery of Valuable Metals from Steel Plant Exhaust
Pages 323-328Creative Commons License
Zeeshan A. Hameed, Junaid Saleem, Hira Lal, Ahsan Abdul Ghani and Muhammad Shoaib
DOI: http://dx.doi.org/10.6000/1927-5129.2016.12.50
Published: 29 July 2016

Abstract: The response of different metals such as Zn, Fe, Pb, Cr and Mn during leaching of Electric Arc Furnace (EAF) dust in acid medium has been investigated. The major proportion of EAF dust constitutes of these metals and their recovery by means of a chemical process is not only economical but also imparts positive impact on the environment. The leaching of metals from dust is achieved using different concentration of sulphuric acid, and the dust samples have been characterized both before and after leaching. Based on the results, several recommendations have been suggested for the optimization of H2SO4 concentration,that lead to the maximum recovery of these metals. Under the optimized conditions, it has been determined that the satisfactory leaching yield of Zn (95%) can be obtained at a concentration of 1M.

Keywords: Electric arc furnace dust, Sulphuric acid, Leaching, Sustainable environment, Zn recovery.